Watch the Volume Pedal online guitar lesson by Jeff McErlain from Guitar Effects Survival Guide
The volume pedal is about as simple as a pedal can get. It is basically an external volume knob that you work with your foot. They are an excellent way to control the volume of your rig and can be placed at different places in your guitar chain. When placed first for example it can be great for volume swells (as we will see), reducing your amp gain by acting like your guitar's volume knob. If placed after your gain section it will bring down your overall volume without reducing changing your tone or gain. You can really experiment with the placement of a volume pedal to see what matches your needs.